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Finding the Fourth Proportional to 230,632.64, 318,268.80 and 130,030.72

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Solution

The fourth proportional to 230,632.64, 318,268.80 and 130,030.72 is: 179,440.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,632.64 : 318,268.80 = 130,030.72 : x
  2. Step 2: Convert to fraction form
    230,632.64/318,268.80 = 130,030.72/x
  3. Step 3: Cross multiply
    230,632.64x = 318,268.80 × 130,030.72
  4. Step 4: Simplify right side
    230,632.64x = 41,384,721,217.54
  5. Step 5: Solve for x
    x = 41,384,721,217.54/230,632.64
  6. Step 6: Final answer
    x = 179,440.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.